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### SATELLITE COMMUNICATION (QUESTION BANK)

DRONACHARYA GROUP OF INSTITUTION  GR. NOIDA
PAPER FOR 2ND SESSTIONAL  EXAM
SUBJECT- SATELLITE COMMUNICATION                                                                            CODE-EC-021
Q1. Explain  FDMA Technique
Q 2.Explain TDMA  Technique
Q 3. Explain CDMA  Technique
Q4. Explain SDMA  Technique
Q.5  What are the factors that affect  the uplink and down link design
Q.6 Explain VSAT
Q.7  the semimajor and minor axis of an elliptical satellite orbit are 20,000 km and 1600 km respectively.Determine the apogee and perigee distances
Q.8 Derive general link equation. Find outexpression for C/N and G/T   ratio.
Q.9 Discuss the antenna requirements for large and small earth statiion
Q. 10  What are the various interferences that may affect the satellite link performances? Explain
Q.11  Two amplifiers are connected in cascades having a gain of 20 db each. If the noise temperature is 200k , determine  the overall gain
Q.12 The EURP of 240W Transponder is 57 dbW. Calculate the approximate gain of the antenna if the transponder is switched to 120W. calculate the new  EIRP,assuming that the same antenna is used
Q.13 what is mean by look angles? Explain them with reference  to a geostationary satellite and the earth station
Q.14 Satellite-1 In An Elliptical Orbit has The orbit semi major axis equal to 18000km and satellite-2 an elliptical  orbit has semi major axis  equal  to 24000 km . Determine the Relationship between their orbital periods.
Q. 15  with the aid of a sketch. Explain what is meant by each of angle
Inclination , argument of pergee, right ascension of the ascending node
Q.16 Explain briefly what is meant by sun transit outage?
Q.17  Differentiate between TDMA and FDMA
Q.18 Explain Noise Temperature
Q.19.Define satellite switched TDMA?
Q20. Define  EIRP and Find the Julian Date for 13 hours UT on 18 Dec 2000

Q . 21 Define Satellite Communication and Satellite
Q.22  Explain Kepler’s L:aws
Q.23  Explain  Types of Attenuation
Q .24 Explain  Types Depolarization
Q.25 Explain Absorption Effect on Propagation in Communication link Design